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SF STILLAGUAMISH--AT JORDAN ROAD
   State:  Washington    County:  SNOHOMISH
   Latitude:  48 5' 43" North    Longitude:  121 58' 27" West
   Elevation:  195 feet
   Supporting WFO:  Seattle    
   Action Stage:  210'   Flood Stage:  211'   Moderate Flood Stage:  212.5'
   Major Flood Stage:  213.5'

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

SF STILLAGUAMISH--AT JORDAN ROAD   (SSFW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-07-15
 Forecast Period: July 15 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 203.26 1362 2025-09-05
90 % 204.01 2106 2025-09-27
70 % 205.55 4540 2025-10-11
50 % 206.64 7089 2025-10-23
30 % 207.91 10526 2025-10-27
10 % 208.92 14282 2025-10-31
05 % 209.47 16355 2025-10-31

Peakflow exceedence plot for SSFW1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon